Once you have a solid crewing engine on the battlefield, all your Vehicles can discount Urza for each one you control that's currently a creature, to get it onto the battlefield quicker
If something seems off, bring out the loupe
runs a simple, creature-heavy strategy with only a handful of noncreature spells exclusively to buff attackers
They do not have a massive impact on the Brawl format, where they are already legal, and so a change to the rules to allow any would likely not shake the game up too much
Given the number of massive Creatures players tend to play in Commander, this card should be very strong
If you have fewer than four cards in your library, only the first pile will have cards in it at all, and the second pile will be empty